Answer:
you didnt put the choices, give me the choices and I can tell you
Explanation:
Cellular respiration is the process of releasing energy from the food that one had taken. The reactants of the cellular respiration were both oxygen and glucose. The main product of this process would be ATP (adenosine phosphate) but could also be H2O and CO2.
<span>Without variation, there is no difference between members of a population to be "selected for" in the first place. This is a basic tenet of natural selection. A new trait must arise in order to advance or decrease the fitness of the individual, and hence, its ability to pass on its genes.</span>